HomeMy WebLinkAboutNC0003417_Draft Permit_20190326 P,ax
ROY COOPER
Governor r
MICHAEL S.REGAN
Secretary
LINDA CULPEPPER
Director NORTH CAROLINA
Environmental Quality
March 26, 2019
Mr. Paul Draovitch, Senior Vice President EH86S
Duke Energy Carolinas, LLC
Mail Code: EC13K
P.O. Box 1006
Charlotte, NC 28201-1006
Subject: Draft NPDES Permit Renewal
Permit NC0003417
H.F. Lee Energy Complex
Wayne County
Facility Class I
Dear Mr. Draovitch:
Enclosed with this letter is a copy of the Draft NPDES permit renewal for your facility.
Please review this draft carefully to ensure thorough understanding of the requirements
and conditions it contains. There are several changes from the draft permit transmitted
on January 21, 2017 including the following:
• Outfalls for seeps and the special condition addressing the discharge from
seepage were eliminated. Seeps will be addresses through Special Order by
Consent EMC SOC WQ S 18-006.
• The Effluent and Monitoring Requirements for Phase III for Outfall 001 were
modified to reflect changes in wastewaters to be discharged. Phase III will
consist of treated groundwater discharge.
• Effluent and Monitoring Requirements for Outfall 001 (decanting and
dewatering) were modified to add monitoring for chromium, lead, cadmium,
copper, zinc and TDS.
• Added a footnote to outfall 002 and 002A to allow the facility to discontinue
sampling under unsafe conditions.
• Removed monitoring and limits for BOD and fecal coliform from outfall 002 as
the wastewater treatment system for domestic wastewaters is no longer in
operation. Footnotes addressing domestic wastewater and the special condition
addressing Domestic Wastewater Treatment Plant requirements were removed
from the draft permit.
• Outfall 004 was added to the permit for the discharge of treated wastewater
from the proposed coal ash beneficiation facility.
• Instream sampling special condition was modified to require monthly sampling.
D_EQ,4,
North Cardin'Department of DwIr onmeirtal Quality 1 Dirtshon at Water Resources
512 Noah safisbury Street I 161$Mal Service Center I Raleigh North Wana 22699-1611
• Clean Water Act 316(b) special condition was modified to require the submittal
of materials required by the 316(b) rule by 3.5 years from the issuance of the
permit and to add language stating that the Division determined that operating
and maintaining the existing closed-cycle recirculating system meets the
requirements for an interim BTA.
• A footnote was added for the decanting and dewatering effluent pages that
requires the facility to discontinue the discharge if pollutant levels reach 85% of `
the allowable levels and to report the event to the Division.
• Ash Pond Working Capacity Special Condition was removed as is no longer ,
applicable.
The NPDES standard conditions (Parts II, III, and IV) that are a part of the permit are
not included in this draft document (cover, map, and Part I). The conditions are the
same as in your current permit except that agency and division names have been
updated. The latest version is available at https://bit.ly/2BZ4xxx and can be viewed
online or downloaded as a PDF file.
Concurrent with this notification the Division is publishing a notice in a newspaper
having circulation in the general Wayne County area, soliciting public comments on
this draft permit. Please provide any written comments you may have to the following:
NCDEQ/DWR, NPDES Permitting Branch, 1617 Mail Service Center, Raleigh, NC
27699-1617 no later than 30 days after receipt of this draft permit.
Following the 30-day public comment period, the Division will review all pertinent
comments and take appropriate action prior to issuing a final permit. If you have
questions concerning this draft permit, please call me at (919) 707-3606 or by email at
sergei.chernikov@ncdenr.gov.
Sincerely,
Sergei Chernikov, Ph.D.
z Environmental Engineer II
NPDES Complex Permitting Unit
Hardcopy: NPDES Files
E-copy: US EPA Region 4
DWR/Wastewater Operator Certification/Maureen Kinney
DWR/Aquatic Toxicology Branch/Susan Meadows
DWR/Washington Regional Office /Water Quality
DWR/Washington Regional Office / Public Water Supply
Page 2 of 2
Permit NC000341 7
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
• NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
Duke Energy Progress, LLC
is hereby authorized to discharge wastewater from a facility located at
H.F. Lee Energy Complex
1199 Black Jack Church Road
Goldsboro, North Carolina
Wayne County
to receiving waters designated as the Neuse River in the Neuse River Basin
in accordance with effluent limitations, monitoring requirements, and other applicable
conditions set forth in Parts I, II, and III hereof.
The permit shall become effective
This permit and the authorization to discharge shall expire at midnight on
Signed this day
Linda Culpepper, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 29
Permit NC0003417
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under
the permit conditions, requirements, terms, and provisions included herein.
Duke Energy Progress, LLC.
is hereby authorized to:
1. Continue to discharge the following treated wastestreams from the H. F. Lee Energy
Complex located at 1199 Black Jack Church Road, Goldsboro, Wayne County:
❑ Outfall 001 -Active Ash Basin - 2.16 MGD
No process wastewaters are discharged to Outfall 001. o
Ash Pond Decant, Phase I
o Ash Pond Dewatering and Groundwater Extraction, Phase II o
Ash Pond Groundwater Extraction, Phase III
❑ Outfall 002 and 002A - Cooling Pond - No Flow Limit
The facility uses an existing 545 acre closed-cycle cooling pond with baffled dikes to
treat recirculating condenser cooling and process water.
o Recirculated condenser cooling water (-369 MGD) o Lee Combined Cycle Plant
Site wastewaters:
o Cooling tower blowdown from the Wet Surface Air Cooler and the combined
cycle Heat Recovery Steam Generator (HRSG),
o Wayne County Combustion Turbine Site wastewaters from the sump lift
station,
o Wayne County Combustion Reverse osmosis reject wastewaters from the water
treatment plant and RO cleaning wastewaters
o Filter plant wastewaters
o Low volume Wastewaters
o Stormwater from drains and Combustion Turbine Site secondary containment
and fuel forwarding area
o Equipment and containment drains and wash waters o Miscellaneous
wastewaters as described in the application
o Coal pile runoff(ceased)
o Outfall 002A- additional outfall to be used only during severe weather or
required maintenance
No metal cleaning wastes shall be discharged to Outfall 002 or Outfall 002A.
Page 2 of 29
Permit NC000341 7
O Outfall 003 - Lee Combined Cycle Plant Site Wastewaters (Optional)- No Flow Limit o
Lee Combined Cycle Plant Site wastewaters:
o Cooling tower blowdown from the Wet Surface Air Cooler and the combined
cycle Heat Recovery Steam Generator (HRSG),
o Wayne County Combustion Turbine Site wastewaters from the sump lift
station,
o Wayne County Combustion Reverse osmosis reject wastewaters from the
water treatment plant and RO cleaning wastewaters
o Filter plant wastewaters
o Equipment and containment drains and wash waters
No metal cleaning wastes shall be discharged to Outfall 003.
❑ Outfall 004 - Coal Ash Beneficiation Plant- No Flow Limit
The facility shall treat wastewater discharged from the beneficiation plant in a
retention pond and an oil/water separator.
Beneficiation Plant wastewaters:
o Truck wash water
o Dust suppression water
o Stormwater
The effluent from the Coal Ash Beneficiation Plant can be discharged to the Neuse
River via Outfall 004 or to the Cooling Pond (Outfall 002).
2. Discharge from said treatment works via Outfalls 001, Outfalls 002 and 002A, Outfall
003 and Outfall 004, into the Neuse River, a Class WS-IV; NSW water in the Neuse
River Basin, at the locations specified on the attached map.
Page 3 of 29
Permit NC0003417
Part I
A.(1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Phase I - Ash
Pond Decant- Outfall 001) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. During the period beginning on the effective date of this permit and lasting until commencement
of dewatering, or expiration, the permittee is authorized to discharge effluent from Outfall 001
(decanting the free water above the settled ash layer that does not involve mechanical
disturbance of the ash). Such discharges shall be limited and monitored' by the permittee as
specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT
CHARACTERISTICS Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow MGD 2.16 Daily Pump Logs Effluent
or estimate
pH3 6.0 < pH <_ 9.0 2/Month Grab Effluent
Total Suspended Solids4 30.0 mg/L 100.0 mg/L 2/Month Grab Effluent
Oil and Grease 15.0 mg/L 20.0 mg/L 2/Month Grab Effluent
Total Kjeldahl Nitrogen Monthly Grab Effluent
(TKN), mg/L
Total Nitrogen (TN), mg/L Monthly Calculated Effluent
TN = (NO2 + NO3) + TKN
Monitor & Report (lbs/month) Monthly Calculated
TN Loads Monitor & Re port lbs ear Annual' Effluent
p ( /y ) y Calculated
Total Phosphorus, mg/L Monthly Grab Effluent
Chronic Toxicity6 Monthly Grab Effluent
Turbidity7, NTU Monthly Grab Effluent
Total Hardness, mg/L Monthly Grab Effluent
[CaCO3]
Total Arsenic, µg/L Weekly Grab Effluent
Total Mercury8, ng/L Weekly Grab Effluent
Total Selenium, µg/L Weekly Grab Effluent
Total Chromium, µg/L Monthly Grab Effluent
Total Lead, µg/L Monthly Grab Effluent
Total Cadmium, µg/L Monthly Grab Effluent
Total Copper, µg/L Monthly Grab Effluent
Total Zinc, pg/L Monthly Grab Effluent
TDS, mg/L Monthly Grab Effluent
Nitrate/nitrite as N, mg/L Monthly Grab Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's
eDMR application system. Please See Special Condition A. (25.).
2. Effluent sampling shall be conducted at the discharge from the ash settling pond prior to
mixing with any other waste stream.
Page 4 of 29
Permit NC0003417
3. The facility shall continuously monitor pH when the decanting process commences and the
decanting pump shall be shutoff automatically when 15 minutes running average pH falls
below 6.1 standard units or rises above 8.9 standard units. Pumping will be allowed to
continue after the pH issue has been resolved or if interruption might result in a dam failure
or damage.
4. The facility shall continuously monitor TSS concentration when the decanting process
commences, and the pump shall be shutoff automatically when one half of the Daily
Maximum limit (15 minutes average) is exceeded. Pumping will be allowed to continue after
the TSS issue has been resolved or if interruption might result in a dam failure or damage.
Continuous TSS monitoring is only required when the pumps are employed.
5. See Special Condition A. (12.) Total Nitrogen Calculations
6. Chronic Toxicity (Ceriodaphnia) at 1.3%; Monthly; see Special Condition A (9).
7. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50
NTU. If the instream turbidity exceeds 50 NTU due to natural background conditions, the
discharge cannot cause turbidity to increase in the receiving stream. Therefore, if the effluent
measurement exceeds 50 NTU, the Permittee shall sample upstream and downstream
turbidity in the receiving waterbody, within 24 hours, to demonstrate the existing turbidity
level in the receiving waterbody was not increased. All data shall be reported on the DMRs.
(See 15A NCAC 2B .0211 (21)). NTU - Nephelometric Turbidity Unit.
8. The facility shall use EPA method 1631E.
b. When the facility commences the ash pond/ponds decanting/dewatering, the facility shall
treat the wastewater discharged from the ash pond using physical-chemical treatment, if
necessary, to assure state Water Quality Standards are not contravened in the receiving
stream. Duke Energy shall notify DWR NPDES Permitting and DWR Washington Regional
Office, in writing, within seven calendar days of installing additional physical-chemical
treatment at this Outfall.
c. The facility is allowed to drawdown the wastewater in the ash pond to no less than three
feet above the ash.
d. The rate for lowering the liquid level in a coal ash pond shall not exceed one (1) foot per
day unless a higher rate is supported to the satisfaction of DEMLR and in accordance with
NCAC, Title 15A, Subchapter 2K.
e. The facility shall use a floating pump station with free water skimmed from the basin
surface using an adjustable weir.
f. The limits and conditions in Section A. (2.) of the permit apply when water in the ash
settling basin is lowered below the three feet trigger mark.
g. The facility shall notify DWR NPDES Permitting Unit and DWR Washington Regional
Office, in writing, seven calendar days prior to the commencement of the dewatering.
h. If any one of these pollutants (As, Se, and Hg) reaches 85% of the allowable level during
decanting/dewatering, the facility shall immediately discontinue discharge from the
decanting/dewatering operations and report the event to the Washington Regional Office
and Complex NPDES Permitting Branch via telephone and e-mail.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no discharge of polychlorinated biphenyls (PCBs).
This facility is currently classified as "non-nutrient bearing".
Page 5 of 29
Permit NC0003417
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Phase II-Ash
Pond Dewatering and Groundwater Extraction - Outfall 001) [15A NCAC 02B .0400 et seq., 02B .0500
et seq.]
a. During the period beginning on the commencement date of the dewatering operation and lasting
until completion of dewatering or expiration, the Permittee is authorized to discharge treated
effluent from Outfall 001 (ash pond dewatering or ash pond dewatering and groundwater
extraction from remediation wells). Such discharges shall be limited and monitored' by the -
permittee as specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT
CHARACTERISTICS Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow 2.16 MGD Weekly Pump Logs Effluent
or estimate
pH3 6.0 < pH <_ 9.0 Weekly Grab Effluent
Total Suspended Solids4 30.0 mg/L 100.0 mg/L Weekly Grab Effluent
Oil and Grease 15.0 mg/L 20.0 mg/L Weekly Grab Effluent
Total Kjeldahl Nitrogen Monthly Grab Effluent
(TKN), mg/L
Total Nitrogen (TN), mg/L Monthly Calculated Effluent
TN = (NO2 + NO3) + TKN
TN Load5 Monitor & Report (lbs/month) Monthly Calculated
Monitor & Report (lbs/year) Annually Calculated Effluent
Total Phosphorus, mg/L Monthly Grab Effluent
Chronic Toxicity6 Monthly Grab Effluent
Turbidity7, NTU Weekly Grab Effluent
Total Hardness, mg/L Grab
Weekly Effluent
[CaCO3]
Total Arsenic, µg/L 3295 µg/L 21994 µg/L Weekly Grab Effluent
Total Mercury8, ng/L Weekly Grab Effluent
Total Selenium, µg/L Weekly Grab Effluent
Total Chromium, µg/L Weekly Grab Effluent
Total Lead, µg/L Weekly Grab Effluent
Total Cadmium, µg/L Weekly Grab Effluent
Total Copper, µg/L Weekly Grab Effluent
Total Zinc, µg/L Weekly Grab Effluent
TDS, mg/L Weekly Grab Effluent
Nitrate/nitrite as N, mg/L Weekly Grab Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Please See Special Condition A. (25.).
2. Effluent sampling shall be conducted at the discharge from the ash settling pond prior to mixing
with any other waste stream.
Page 6 of 29
Permit NC000341 7
3. The facility shall continuously monitor pH when the dewatering process commences and the
dewatering pump shall be shutoff automatically when 15 minutes running average pH falls below
6.1 standard units or rises above 8.9 standard units. Pumping will be allowed to continue after
the pH issue has been resolved or if interruption might result in a dam failure or damage.
4. The facility shall continuously monitor TSS concentration when the dewatering process
commences, and the dewatering pump shall be shutoff automatically when one half of the Daily
Maximum limit (15 minutes average) is exceeded. Pumping will be allowed to continue after the
TSS issue has been resolved or if interruption might result in a dam failure or damage.
Continuous TSS monitoring is only required when the pumps are employed.
5. See Special Condition A. (12.) Total Nitrogen Calculations
6. Chronic Toxicity (Ceriodaphnia) at 1.3%; Monthly; see Special Condition A (9).
7. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50
NTU. If the instream turbidity exceeds 50 NTU due to natural background conditions, the
discharge cannot cause turbidity to increase in the receiving stream. Therefore, if the effluent
measurement exceeds 50 NTU, the Permittee shall sample upstream and downstream turbidity in
the receiving waterbody, within 24 hours, to demonstrate the existing turbidity level in the
receiving waterbody was not increased. All data shall be reported on the DMRs. (See 15A NCAC
2B .0211 (21)). NTU - Nephelometric Turbidity Unit
8. The facility shall use EPA method 1631E.
b. The rate for lowering the liquid level in a coal ash pond shall not exceed one (1) foot per
day unless a higher rate is supported to the satisfaction of DEMLR and in accordance with
NCAC, Title 15A, Subchapter 2K.
c. The facility shall use a floating pump station with free water skimmed from the basin
surface using an adjustable weir.
d. When the facility commences the ash pond/ponds decanting/dewatering, the facility shall
treat the wastewater discharged from the ash pond using physical-chemical treatment, if
necessary, to assure state Water Quality Standards are not contravened in the receiving
stream. Duke Energy shall notify DWR NPDES Permitting and DWR Washington Regional
Office, in writing, within seven calendar days of installing additional physical-chemical
treatment at this Outfall.
e. If any one of these pollutants (As, Se, and Hg) reaches 85% of the allowable levels during
decanting/dewatering, the facility shall immediately discontinue discharge from the
decanting/dewatering operations and report the event to the Washington Regional Office
and Complex NPDES Permitting Branch via telephone and e-mail.
f. When pond dewatering has finished and the discharge primarily consists of treated
groundwater extraction and remediation wastewater, Duke Energy shall sample and
submit a completed EPA Form 2C for Outfall 001 as soon as practicable, but no later than
180 days from the commencement of groundwater remediation discharges through Outfall
001.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no discharge of polychlorinated biphenyls (PCBs).
This facility is currently classified as "non-nutrient bearing".
Page 7 of 29
Permit NC000341 7
A. (3.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Phase III -
Groundwater Extraction - Outfall 001) [15A NCAC 02B .0400 et seq., 02B .0500 et
seq.]
a. During the period when ash pond dewatering has finished and beginning on the commencement
date of only groundwater remediation discharge and lasting until expiration, the Permittee is
authorized to discharge treated effluent from Outfall 001 (consisting of groundwater
extraction from remediation wells). Such discharges shall be limited and monitored' by the
permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow 1.8 MGD Weekly Pump Logs Effluent
or estimate
pH 6.0 <_ pH <_ 9.0 2/ Month Grab Effluent
Total Kjeldahl Nitrogen
(TKN), mg/L Monthly Composite Effluent
•
Total Nitrogen (TN), mg/L
TN = (NO2 + NO3) + TKN Monthly Calculated Effluent
TN Load3 Monitor 86 Report (lbs/month) Monthly Calculated Effluent
Monitor 86 Report (lbs/year) Annually Calculated
Total Phosphorus, mg/L Monthly Composite Effluent
Chronic Toxicity4 Monthly Composite Effluent
Turbiditys, NTU Monthly Grab Effluent
Total Hardness, mg/L Monthly Composite Effluent
[CaCO3]
Total Arsenic, pg/L Monthly Composite Effluent
Total Cadmium, pg/L Monthly Composite Effluent
Total Copper, pg/L Monthly Composite Effluent
Total Lead, pg/L Monthly Composite Effluent
Total Mercury6, ng/L Monthly Grab Effluent
Total Barium, mg/L Monthly Composite Effluent
Total Selenium, pg/L Monthly Composite Effluent
Nitrate/nitrite as N, mg/L Monthly Composite Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Please See Special Condition A. (25.).
2. Effluent sampling shall be conducted at the discharge from the Wastewater Treatment System
prior to mixing with any other waste stream.
3. See Special Condition A. (12.) Total Nitrogen Calculations
4. Chronic Toxicity (Ceriodaphnia) at 1.0 %; Monthly; see Special Condition A (9).
5. The net turbidity shall not exceed 50 NTU using a grab sample and measured by the difference
between the effluent turbidity and the background turbidity. The sample for the background
Page 8 of 29
Permit NC0003417
turbidity shall be taken at point in the receiving waterbody upstream of the discharge location,
and the background turbidity and the effluent turbidity samples shall be taken within the same
24 hour period.
NTU - Nephelometric Turbidity Unit.
6. The facility shall use EPA method 1631E.
b. When pond dewatering has finished and the discharge primarily consists of treated
groundwater extraction and remediation wastewater, Duke Energy shall sample and submit
a completed EPA Form 2C for Outfall 001 as soon as practicable, but no later than 180
days from the commencement of groundwater remediation discharges through Outfall 001.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 9 of 29
Permit NC0003417
A. (4) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (COOLING
POND - OUTFALL 002) [15A NCAC 02B .0400 ET SEQ., 02B .0500 ET SEQ.]
a. During the period beginning on the effective date of this permit and lasting until expiration, the
permittee is authorized to discharge treated effluent from Outfall 002 (consisting primarily of
recirculated condenser cooling water, low volume wastes, cooling tower blowdown, combustion
turbine site wastewaters, reverse osmosis reject wastewaters, filter plant wastewaters, storm
water, coal pile runoff(ceased) and equipment wash waters). Such discharges shall be limited
and monitored' by the permittee as specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT
CHARACTERISTICS Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow, MGD2 Each Event Estimate Outfall Structure
Temperature3 32.0°C Each Event Grab Outfall Structure
Total Suspended Solids 30.0 mg/L 50.0 mg/L Each Event Grab Outfall Structure
Oil and Grease 15.0 mg/L 20.0 mg/L Each Event Grab Outfall Structure
pH 6.0 <_ pH <_ 9.0 Each Event Grab Outfall Structure
Total Residual Chlorine4 28.0 pg/L Each Event Grab Outfall Structure
Free Available Chlorine4 200 pg/L 500 pg/L Each Event Grab Outfall Structure
Fluoride, mg/L Each Event Grab Outfall Structure
Total Hardness, mg/L
[CaCO3] Each Event Grab Outfall Structure
Total Arsenic pg/L, Each Event Grab Outfall Structure
Total Chromium 200 pg/L 200 µg/L Each Event Grab Outfall Structure
Total Zinc 1000 pg/L 1000 µg/L Each Event Grab Outfall Structure
Total Lead, µg/L Each Event Grab Outfall Structure
Total Mercury5, ng/L Each Event Grab Outfall Structure
13,734
Total Molybdenum, pg/L pg/L 13,734 µg/L Each Event Grab Outfall Structure
Acute Episodic Toxicity6 See A. (10.) Grab Outfall Structure
The 126 Priority
Pollutants (40 CFR Part
423, Appendix A) No Detectable Amount Each Event Grab Outfall Structure
Exclusive of Zinc and
Chromium?
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Please See Special Condition A. (25.).
2. This discharge is permitted only in the following cases: a) caused by extreme rainfall; b) where
unavoidable to prevent loss of life, severe property damage, or damage to the cooling pond
structure; or c) for necessary maintenance activities. In the event that a discharge occurs, the
Page 10 of 29
Permit NC0003417
permittee shall inform the Washington Regional Office (252-946-6481) and the Neuse River Water
and Sewer Authority (252-522-2567) by telephone as soon as possible, but in no case later than
48 hours after the discharge occurs. The permittee shall also provide the following information,
in writing, to the Division within 10 days of the discharge: a) a description and cause of the
discharge; b) the duration of the discharge, including time and dates, anticipated time the
discharge is expected to continue, and steps being taken to reduce, prevent, and eliminate
reoccurrence of the discharge. The permittee shall take all reasonable steps necessary to
minimize any adverse impact to navigable waters resulting from the discharge, including such
monitoring as necessary to determine the environmental impact of the discharge.
3. As a result of this discharge, the temperature of the receiving water shall not be increased by
more than 2.8°C above ambient water temperature and in no case exceed 32°C.
4. Monitoring requirement for total residual chlorine applies only when chlorine is added to the
recirculating condenser cooling or process water discharged to the pond. Neither free available
chlorine nor total residual chorine may be discharged from any single generating unit for more
than two hours per day, unless the Permittee demonstrates to the Division that discharge for
more than two hours is required for macroinvertebrate control. The 500 µg/L is a daily
maximum limitation and is to be measured during the chlorine release period. The 200 µg/L
limitation is an average during the chlorine release period. Monitoring is required only when
chlorine is added to the cooling water system.
5. The facility shall use EPA method 1631E.
6. Acute Episodic Toxicity (Fathead Minnow 24-hr); LC50; see Special Condition A. (10).
7. These limitations and monitoring requirements apply if these substances are added by the
Permittee for cooling tower maintenance. There shall be no detectable amounts of the 126
priority pollutants (40 CFR 423 Appendix A) contained in chemicals added for cooling tower
except for total chromium and total zinc. Compliance with the limitations for the 126 priority
pollutants in 40 CFR Section 423.13(d)(1) may be determined by engineering calculations which
demonstrate that the regulated pollutants are not detectable in the final discharge by the
analytical methods in 40 CFR Part 136.
b. The permittee shall obtain authorization from the Division of Water Resources prior to
using any biocide in the cooling water; see condition A. (16).
c. In accordance with 15A NCAC 2B .0505 (c)(4), sampling may be discontinued when flow
conditions or extreme weather conditions could result in injury or death of the person(s)
collecting samples. In such cases, on each day that sampling is discontinued, written
justification for the discontinuance shall be specified in the monitoring report for the
month in which the event occurred.
There shall be no discharge of polychlorinated biphenyls (PCBs).
There shall be no discharge of metal cleaning wastes.
There shall be no discharge of floating solids or foam visible in other than trace amounts.
Page 11 of 29
Permit NC0003417
A. (5.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Cooling
Pond - Outfall 002A) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. During the period beginning on the effective date of this permit and lasting until expiration, the
permittee is authorized to discharge treated effluent from Outfall 002A only during severe
weather events or required maintenance (this wastewater primarily consists of recirculated
condenser cooling water, low volume wastes, cooling tower blowdown, combustion turbine site
wastewaters, reverse osmosis reject wastewaters, filter plant wastewaters, storm water, and
equipment wash waters). Such discharges shall be limited and monitored' by the permittee as
specified below:
LIMITS MONITORING REQUIREMENTS
EFFLUENT
CHARACTERISTICS Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow, MGD2 Each Event Estimate Outfall Structure
Temperature3 32.0 °C Each Event Grab Outfall Structure
Total Suspended Solids 30.0 mg/L 50.0 mg/L Each Event Grab Outfall Structure
Oil and Grease 15.0 mg/L 20.0 mg/L Each Event Grab Outfall Structure
pH 6.0 < pH 9.0 Each Event Grab Outfall Structure
Total Residual Chlorine4 28.0 µg/L Each Event Grab Outfall Structure
Free Available Chlorine4 200 µg/L 500 µg/L Each Event Grab Outfall Structure
Fluoride, mg/L Each Event Grab Outfall Structure
Total Hardness, mg/L
[CaCO3] Each Event Grab Outfall Structure
Total Arsenic µg/L, Each Event Grab Outfall Structure
Total Chromium 200 µg/L 200 µg/L Each Event Grab Outfall Structure
Total Zinc 1000 µg/L 1000 µg/L Each Event Grab Outfall Structure
Total Lead, µg/L Each Event Grab Outfall Structure
Total Mercurys, ng/L Each Event Grab Outfall Structure
13,734 13,734
Total Molybdenum, µg/L µg/L µg/L Each Event Grab Outfall Structure
Acute Episodic Toxicity6 See A. (10.) Grab Outfall Structure
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Please See Special Condition A. (25.).
2. This discharge is permitted only in the following cases: a) caused by extreme rainfall; b) where
unavoidable to prevent loss of life, severe property damage, or damage to the cooling pond
structure; or c) for necessary maintenance activities. In the event that a discharge occurs, the
permittee shall inform the Washington Regional Office (252-946-6481) by telephone as soon as
possible, but in no case later than 48 hours after the discharge occurs. The permittee shall also
provide the following information, in writing, to the Division within 10 days of the discharge: a) a
description and cause of the discharge; b) the duration of the discharge, including time and
dates, anticipated time the discharge is expected to continue, and steps being taken to reduce,
Page 12 of 29
Permit NC000341 7
prevent, and eliminate reoccurrence of the discharge. The permittee shall take all reasonable
steps necessary to minimize any adverse impact to navigable waters resulting from the discharge,
including such monitoring as necessary to determine the environmental impact of the discharge.
3. As a result of this discharge, the temperature of the receiving water shall not be increased by
more than 2.80C above ambient water temperature and in no case exceed 32°C.
4. Monitoring requirement for total residual chlorine applies only when chlorine is added to the
recirculating condenser cooling or process water discharged to the pond. Neither free available
chlorine nor total residual chorine may be discharged from any single generating unit for more
than two hours per day, unless the Permittee demonstrates to the Division that discharge for
more than two hours is required for macroinvertebrate control. The 500 µg/L is a daily
maximum limitation and is to be measured during the chlorine release period. The 200 µg/L
•
limitation is an average during the chlorine release period. Monitoring is required only when
chlorine is added to the cooling water system.
5. The facility shall use EPA method 1631E.
6. Acute Episodic Toxicity (Fathead Minnow 24-hr); LC50; see Special Condition A. (10).
b. The permittee shall obtain authorization from the Division of Water Resources prior to
using any biocide in the cooling water; see condition A. (16).
c. In accordance with 15A NCAC 2B .0505 (c)(4), sampling may be discontinued when flow
conditions or extreme weather conditions could result in injury or death of the person(s)
collecting samples. In such cases, on each day that sampling is discontinued, written
justification for the discontinuance shall be specified in the monitoring report for the
month in which the event occurred.
There shall be no discharge of polychlorinated biphenyls (PCBs).
There shall be no discharge of metal cleaning wastes.
There shall be no discharge of floating solids or foam visible in other than trace amounts.
Page 13 of 29
Permit NC0003417
A. (6.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Wastewater
Pond -Outfall 003) [15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
a. During the period beginning on the effective date of this permit and lasting until expiration, the
permittee is authorized to discharge filter plant wastewaters, equipment and containment drains,
reverse osmosis reject and filter backwash, quenched heat recovery steam generator blowdown,
combustion turbine wash waters, and equipment wash water from Outfall 003. Such discharges
shall be limited and monitored' by the permittee as specified below: .
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS Monthly Daily Measurement Sample Sample .
Average Maximum Frequency Type Location
Flow, MGD Daily Pump Logs Effluent
Temperature2 32.0 °C 2/ Month Grab Effluent
Total Suspended Solids 30.0 mg/L 100.0 mg/L 2/ Month Composite Effluent
Oil and Grease 15.0 mg/L 20.0 mg/L 2/ Month Grab Effluent
pH 6.0 s pH <_ 9.0 2/ Month Grab Effluent
Total Residual Chlorine3 28.0 pg/L 2/ Month Grab Effluent
Free Available Chlorine3 200 pg/L 500 pg/L 2/ Month Grab Effluent
Fluoride, mg/L Quarterly Grab Effluent
Total Hardness, mg/L
[CaCO3] Quarterly Composite Effluent
Total Arsenic pg/L, Composite Effluent
Quarterly
Total Chromium 200 µg/L 200 pg/L Monthly Composite Effluent
Total Zinc 1000 pg/L 1000 pg/L Monthly Composite Effluent
Turbidity5, NTU Monthly Grab Effluent
Total Lead, µg/L Quarterly Composite Effluent
Total Mercury4, ng/L Quarterly Grab Effluent
Total Molybdenum, pg/L Quarterly Composite Effluent
Total Selenium, µg/L Quarterly Composite Effluent
Acute Toxicity6 See A.(11.) Composite Effluent
The 126 Priority
Pollutants (40 CFR Part
423, Appendix A) No Detectable Amount Annual 40 CFR 136 Effluent
Exclusive of Zinc and
Chromium?
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Please See Special Condition A. (25.).
2. As a result of this discharge, the temperature of the receiving water shall not be increased by
more than 2.8°C above ambient water temperature and in no case exceed 32°C.
3. Monitoring requirement for total residual chlorine applies only when chlorine is added to the
blowdown or process water discharged to the pond. Neither free available chlorine nor total
Page 14 of 29
Permit NC0003417
residual chorine may be discharged from any single generating unit for more than two hours per
day, unless the Permittee demonstrates to the Division that discharge for more than two hours is
required for macroinvertebrate control. The 500 jig/L is a daily maximum limitation and is to be
measured during the chlorine release period. The 200 µg/L limitation is an average during the
chlorine release period. Monitoring is required only when chlorine is added to the cooling water
system.
4. The facility shall use EPA method 1631E.
5. The discharge from this facility shall not cause turbidity in the receiving stream to exceed 50 NTU. If the
• instream turbidity exceeds 50 NTU due to natural background conditions,the discharge cannot cause
turbidity to increase in the receiving stream. Therefore,if the effluent measurement exceeds 50 NTU,the
Permittee shall sample upstream and downstream turbidity in the receiving waterbody,within 24 hours,to
demonstrate the existing turbidity level in the receiving waterbody was not increased.All data shall be
reported on the DMRs. (See 15A NCAC 2B.0211 (21)). NTU-Nephelometric Turbidity Unit
6. Acute Episodic Toxicity (Fathead Minnow 24-hr); LC50; see Special Condition A. (11).
7. These limitations and monitoring requirements apply if these substances are added by the
Permittee for cooling tower maintenance. There shall be no detectable amounts of the 126
priority pollutants (40 CFR 423 Appendix A) contained in chemicals added for cooling tower
except for total chromium and total zinc. Compliance with the limitations for the 126 priority
pollutants in 40 CFR Section 423.13(d)(1) may be determined by engineering calculations which
demonstrate that the regulated pollutants are not detectable in the final discharge by the
analytical methods in 40 CFR Part 136.
b. The permittee shall obtain authorization from the Division of Water Resources prior to
using any biocide in the cooling water; see condition A. (16.).
c. When wastewater discharges to Outfall 003 commence, Duke Energy shall sample and
submit a completed EPA Form 2C for Outfall 003 as soon as practicable, but no later than
180 days from the commencement of discharge through Outfall 003.
There shall be no discharge of polychlorinated biphenyls (PCBs).
There shall be no discharge of metal cleaning wastes.
There shall be no discharge of floating solids or foam visible in other than trace amounts.
Page 15 of 29
Permit NC0003417
A. (7.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS (Coal Ash
Beneficiation Plant - OUTFALL 004) [15A NCAC 02B .0400 et seq., 02B .0500 et
seq.]
a. During the period beginning on the commencement date of the beneficiation plant operations and
lasting until expiration, the Permittee is authorized to discharge from Outfall 004- Coal Ash
Beneficiation Plant discharge. Such discharges shall be limited and monitored) by the Permittee as
specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Daily Measurement Sample Sample
Average Maximum Frequency Type Location
Flow, MGD Daily Estimate Effluent
pH 6.0 to 9.0 S.U. Monthly Grab Effluent
TSS 30.0 mg/L 50.0 mg/L Monthly Grab Effluent
Oil and Grease 15.0 mg/L 20.0 mg/L Monthly Grab Effluent
Total Dissolved Solids, Monthly Grab Effluent
mg/L
Chlorides, mg/L Monthly Grab Effluent
Sulfates, mg/L Monthly Grab Effluent
Total Hardness, mg/L as Monthly Grab Effluent
CaCO3
Total Arsenic, µg/L Monthly Grab Effluent
Total Selenium, µg/L Monthly Grab Effluent
Total Copper, µg/L Monthly Grab Effluent
Total Lead, µg/L Monthly Grab Effluent
Total Nickel, µg/L Monthly Grab Effluent
Total Mercury2 47 ng/L (annual average Monthly Grab Effluent
limit)
Total Thallium, µg/L Monthly Grab Effluent
Total Zinc, µg/L Monthly Grab Effluent
Acute Toxicity3 Monthly Grab Effluent
Notes:
1. The permittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR
application system. Please See Special Condition A. (25.).
2. The facility shall use EPA method 1631E.
3. Acute Toxicity (Fathead Minnow 24-hr); LC50; see Special Condition A. (11).
b. When the coal ash beneficiation discharge and treatment commences from the coal ash
beneficiation facility, Duke Energy shall sample and submit a completed EPA Form 2C for
Outfall 004 as soon as practicable, but no later than 180 days from the commencement of the
discharge through Outfall 004.
c. There shall be no discharge of floating solids or visible foam in other than trace amounts.
Page 16 of 29
Permit NC0003417
A. (8.) TOXICITY RE-OPENER CONDITION [15A NCAC 02B .0400 et seq., 02B .0500 et
seq.]
This permit shall be modified, or revoked and reissued, to incorporate additional toxicity limitations
and monitoring requirements in the event that toxicity testing or other studies conducted on the
effluent or receiving stream indicate that detrimental effects may be expected in the receiving stream
as a result of this discharge.
A. (9.) CHRONIC TOXICITY LIMIT (Monthly - Outfall 001) [15A NCAC 02B .0400 et
• seq., 02B .0500 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 1.3 %(Phase I and II)/1.0% (Phase
III).
The permit holder shall perform at a minimum, monthiti monitoring using test procedures outlined
in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010,
or subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised- December 2010) or subsequent versions. Effluent sampling for this testing must be
obtained during representative effluent discharge and shall be performed at the NPDES permitted
final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any month results in a failure or ChV below
the permit limit, then multiple-concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole
Effluent Toxicity Test Procedure" (Revised-December 2010) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,
DWR Form AT-3 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and
all concentration/response data, and be certified by laboratory supervisor and ORC or approved
designate signature. Total residual chlorine of the effluent toxicity sample must be measured and
reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT)
test form indicating the facility name, permit number, pipe number, county, and the month/year of
"NoFlow" inofform. The
the report with the notation of the comment areareport shall be
the o
submitted to the Water Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month. Assessment of toxicity compliance is based
on the toxicity testing month.
Page 17 of 29
Permit NC0003417
Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Resources indicate potential impacts to the receiving stream, this permit may be
re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival, minimum control organism reproduction, and appropriate environmental
controls, shall constitute an invalid test and will require immediate follow-up testing to be
completed no later than the last day of the month following the month of the initial monitoring.
A. (10.) ACUTE TOXICITY MONITORING - Outfalls 002, 002A, and 003 •
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
The permittee shall conduct FIVE acute toxicity tests using protocols defined as definitive in EPA
Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to
Freshwater and Marine Organisms."The monitoring shall be performed as a Fathead Minnow
(Pimephales promelas) 24 hour static test. Effluent samples for self-monitoring purposes must be
obtained below all waste treatment. For each Outfall, sampling and subsequent testing will occur
during the first five discrete discharge events after the effective day of this permit. After monitoring of
the first five toxicity tests, the permittee will conduct one test annually, with the annual period
beginning in January of the next calendar year. The annual test requirement must be performed and
reported by June 30. If no discharge occurs by June 30, verbal notification shall be made to the
Division within two weeks of this date by contacting the Aquatic Toxicology Unit at 919-743-8401.
Verbal notification shall be followed by the Aquatic Toxicity Test Form indicating "No Discharge
through June 30th" within 30 days following the reporting period. Toxicity testing shall be performed
on the next discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was
performed, using the appropriate parameter code. Additionally, DWR Form AT-1 (original) is to be
sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical
measurements performed in association with the toxicity tests, as well as all dose/response data.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is
employed for disinfection of the waste stream.
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Water Resources indicate potential impacts to the receiving stream, this permit
may be re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as
minimum control organism survival and appropriate environmental controls, shall constitute
an invalid test and will require immediate follow-up testing to be completed no later than the
last day of the month following the month of the initial monitoring.
Page 18 of 29
Permit NC0003417
A. (11.) ACUTE TOXICITY MONITORING - Outfall 004 [15A NCAC 02B .0400 et seq.,
02B .0500 et seq.]
The permittee shall conduct acute toxicity tests on a mont hill basis using protocols defined as
definitive in EPA Document EPA-821-R-02-012 entitled "Methods for Measuring the Acute Toxicity of
Effluents and Receiving Waters to Freshwater and Marine Organisms." The monitoring shall be
performed as a Fathead Minnow (Pimephales promelas) 48-hour static test. Effluent samples for
self-monitoring purposes must be obtained during representative effluent discharge and shall be
performed at the NPDES permitted final effluent discharge below all waste treatment processes.
• The parameter code for_Pimephales promelas is TAA6C. All toxicity testing results required as part of
this permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it
was performed, using the appropriate parameter code. Additionally, DWR Form AT-1 (original) is to
be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water Sciences Section no later than 30 days of
end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements perforr
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent
toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during any month, the permittee will complete
the information located at the top of the aquatic toxicity (AT) test form indicating the facility name,
permit number, pipe number, county, and the month/year of the report with the notation of"No
Flow" in the comment area of the form. The report shall be submitted to the Water Sciences Section
at the address cited above.
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Water Quality indicate potential impacts to the receiving stream, this permit may
be re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate follow-up testing to be completed no later than the last day of the month
following the month of the initial monitoring.
A. (12.) CALCULATION OF TOTAL NITROGEN LOADS - Outfall 001 (Ash Pond)
[G.S. 143-215.1(b)]
a. The Permittee shall calculate monthly and annual TN Loads as follows:
i. Monthly TN Load (lb/mo) = TN x TMF x 8.34
where:
TN = the average Total Nitrogen concentration (mg/L) of the samples collected
during the month
TMF = the Total Monthly Flow of wastewater discharged during the month
(MG/mo)
Page 19 of 29
Permit NC0003417
8.34 = conversion factor, from (mg/L x MG) to pounds
ii. Annual TN Load (lb/yr) = Sum of the 12 Monthly TN Loads for the calendar year
b. The Permittee shall report monthly Total Nitrogen results (mg/L and lb/mo) in the discharge
monitoring report for that month and shall report each year's annual results (lb/yr) in the
December report for that year.
A. (13.) ANNUAL LIMITS FOR TOTAL NITROGEN [G.S. 143-215.1(b)]
a. Total Nitrogen (TN) allocations and TN Load limits for NPDES dischargers in the Neuse River
basin apply on a calendar year basis.
b. For any given calendar year, the Permittee shall be in compliance with the annual TN Load limit
in this Permit if:
i. the Permittee's annual TN discharge is less than or equal to its TN Load limit, or ii.
the Permittee is a co-permittee member of a compliance association.
c. If the Permittee is not a co-permittee member of a compliance association and the Permittee's
cumulative annual TN discharge exceeds the effective TN Load limit in this permit at any point
during the calendar year, the Permittee is in violation of its TN Load limit, and each day of a
continuing violation shall constitute a separate violation.
d. The TN Load limit in this Permit (if any) may be modified as the result of allowable changes in
the Permittee's TN allocation.
i. Allowable changes include those resulting from purchase of TN allocation from the
Wetlands Restoration Fund; purchase, sale, trade, or lease of allocation between the
Permittee and other dischargers; regionalization; and other transactions approved by the
Division.
ii. The Permittee may request a modification of the TN Load limit in this Permit to reflect
allowable changes in its TN allocation. Upon receipt of timely and proper application, the
Division will modify the permit as appropriate and in accordance with state and federal
program requirements.
iii. Changes in TN limits become effective on January 1 of the year following permit
modification. The Division must receive application no later than August 31 for changes
proposed for the following calendar year.
iv. Application shall be sent to:
NCDWR / NPDES Programs
Attn: Neuse River Basin Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
e. If the Permittee is a member and co-permittee of an approved compliance association, its TN
discharge during that year is governed by that association's group NPDES permit and the TN
limits therein.
i. The Permittee shall be considered a Co-Permittee Member for any given calendar year in
which it is identified as such in Appendix A of the association's group NPDES permit.
ii. Association roster(s) and members' TN allocations will be updated annually and in
accordance with state and federal program requirements.
iii. If the Permittee intends to join or leave a compliance association, the Division must be
notified of the proposed action in accordance with the procedures defined in the
association's NPDES permit.
(A) Upon receipt of timely and proper notification, the Division will modify'the permit as
appropriate and in accordance with state and federal program requirements.
Page 20 of 29
Permit NC000341 7
(B) Membership changes in a compliance association become effective on January 1 of
the year following modification of the association's permit.
f. The TN monitoring and reporting requirements in this Permit remain in effect until expiration of
this Permit and are not affected by the Permittee's membership in a compliance association.
A. (14.) TOTAL NITROGEN ALLOCATIONS [G.S. 143-215.1(b)]
a. The following table lists the Total Nitrogen (TN) allocation(s) assigned to, acquired by, or
transferred to the Permittee in accordance with the Neuse River nutrient management rule
(T15A NCAC 02B .0234) and the status of each as of permit issuance. For compliance
purposes, this table does not supersede any TN limit(s) established elsewhere in this permit or
in the NPDES permit of a compliance association of which the Permittee is a Co-Permittee
Member.
ALLOCATION AMOUNT 1
ALLOCATION SOURCE DATE STATUS
TYPE Estuary Discharge
(lb/yr) (lb/yr)
NA See Footnote 2. - - - -
TOTAL - - -
Footnote:
1. Transport Factor = 70%
2. Duke Energy Progress'H.F.Lee Energy Complex received no TN allocation under the Neuse rule but is
allowed a baseline TN load of 3,260 lb/yr at its Outfall 001 (2,282 lb/yr at the estuary),which is not part of the
point source waste load allocation.
b. Any addition, deletion, or modification of the listed allocations (other than typographical errors)
or any change to Active status of any of the listed allocations shall be considered a major
modification of this permit and shall be subject to the public review process afforded such
modifications under state and federal rules.
A. (15.) ADDITIONAL CONDITIONS AND DEFINITIONS [G.S. 143-215.3(a)(2) & 143-
215.66]
The following special conditions are applicable to all outfalls regulated by this permit:
a) There shall be no discharge of polychlorinated biphenyl compounds such as those once
commonly used for transformer fluid.
b) Nothing contained in this permit shall be construed as a waiver by the permittee of any right
to a hearing it may have pursuant to State or Federal laws or regulations.
c) Discharge of any waste resulting from the combustion of toxic or hazardous waste to any
waste stream which ultimately discharges to waters of the United States is prohibited, unless
specifically authorized in this permit.
d) The permittee shall report all visible discharges of floating materials (such as an oil slick) to
the Director when submitting DMRs.
e) "Upset," means an exceptional incident in which there is an unintentional and temporary
non-compliance with technology-based effluent limitations because of factors beyond the
reasonable control of the permittee. An upset does not include noncompliance to the extent
Page 21 of 29
Permit NC0003417
cause by operational error, improperly designed treatment facilities, inadequate treatment
facilities, lack of preventative maintenance, or improper operations.
f) All flows shall be reported on monthly DMRs. Should no flow occur during a given month,
the words "no flow" should be clearly written on the front of the DMR.
g) EPA methods 200.7 or 200.8 (or the most current versions) shall be used for analyses of all
metals except for total mercury.
h) All effluent samples for all external outfalls shall be taken at the most accessible location
after the final treatment but prior to discharge to waters of the U.S. (40 CFR 122.41(j)).
i) The term low volume waste sources means wastewater from all sources except those for which
specific limitations are otherwise established in this part (40 CFR 423.11 (b)).
j) The term chemical metal cleaning waste means any wastewater resulting from cleaning any •
metal process equipment with chemical compounds, including, but not limited to, boiler tube
cleaning (40 CFR 423.11 (c)).
k) The term metal cleaning waste means any wastewater resulting from cleaning [with or
without chemical cleaning compounds] any metal process equipment including, but not
limited to, boiler tube cleaning, boiler fireside cleaning, and air preheater cleaning (40 CFR
423.11 (d)).
1) For all outfalls where the flow measurement is to be "estimated" the estimate can be done by
using calibrated V-notch weir, stop-watch and graduated cylinder, or other method approved
by the Division.
A. (16.) BIOCIDE CONDITION [NCGS 143-215.1]
The permittee shall not use any biocides except those approved in conjunction with the permit
application or in accordance with this condition. The permittee shall notify the Director in writing not
later than ninety (90) days prior to instituting use of any additional biocide used in cooling systems
which may be toxic to aquatic life other than those previously reported to the Division of Water
Resources. Such notification shall include completion of Biocide Worksheet Form 101 and a map
locating the discharge point and receiving stream. Completion of Biocide Worksheet Form 101 is not
necessary for those outfalls containing toxicity testing. Division approval is not necessary for the
introduction of new biocides into outfalls currently tested for whole effluent toxicity.
A. (17.) CLEAN WATER ACT SECTION 316(B) [40 CFR 125.95]
The permittee shall comply with the Cooling Water Intake Structure Rule per 40 CFR 125.95. Pursuit
to 40 CFR 125.98 the Director has determined that operating and maintaining the existing
Closedcycle recirculating system meets the requirements for an interim BTA.
The permittee shall submit the following information as required in §122.21 (except 122.21 (r)(6)) by
July 31, 2022.
§122.21(r)(2) Source Water Physical Data
§/22.21(r)(3) Cooling Water Intake Structure Data
§122.21(r)(4) Source Water Baseline Biological Characterization Data
§/22.21(r)(5) Cooling Water System Data
§122.21(r)(6) Chosen Method(s) of Compliance with the Impingement Mortality Standard (the chosen
method will be defined after the site-specific BTA determination is made by the Director)
§122.21(r)(7) Entrainment Performance Studies
§122.21(r)(8) Operational Status
Page 22 of 29
Permit NC0003417
Based on the Director's selection of entrainment, this permit may be reopened to establish a
schedule to implement the selected technology to comply with the Rule.
Copies of all the study plans, study results, and any other applicable materials should be submitted
to:
1. Electronic Version Only (PDF and CD)
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
2. Electronic Version (PDF and CD) and Hard Copy
Division of Water Resources
Water Sciences Section
1623 Mail Service Center
Raleigh, NC 27699-1623
Nothing in this permit authorizes take for the purposes of a facility compliance with the Endangered
Species Act.
A. (18.) COMPLIANCE BOUNDARY [15A NCAC 02L.0107]
The compliance boundary for the disposal system shall be specified in accordance with 15A NCAC
02L .0107(a) or (b) dependent upon the date permitted. An exceedance of groundwater standards at
or beyond the compliance boundary is subject to remediation action according to 15A NCAC 02L
.0106(c), (d), or (e) as well as enforcement actions in accordance with North Carolina General Statute
143-215.6A through 143-215.6C. The compliance boundary map for this facility is incorporated
herein and attached hereto as Attachment A.
A. (19.) STRUCTURAL INTEGRITY INSPECTIONS OF ASH POND DAM [15A NCAC
02K.0208]
The facility shall meet the dam design and dam safety requirements per 15A NCAC 2K.
A. (20.) ASH POND CLOSURE [NCGS 143-215.1(b)]
The facility shall prepare an Ash Ponds Closure Plan. This Plan shall be submitted to the Division
one month prior to the closure of the ash ponds to the address listed below:
Electronic Version Only (PDF and CD)
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Page 23 of 29
Permit NC0003417
A. (21.) INSTREAM MONITORING [15A NCAC 02B .0500 et seq.]
The facility shall conduct monthly instream monitoring (upstream of Outfall 002 - at the Ferry Bridge
Road, and downstream of Outfall 003 - at Stevens Mill Road bridge) for total arsenic, total selenium,
total mercury (method 1631 E), total chromium, dissolved lead, dissolved cadmium, dissolved copper,
dissolved zinc, bromide, total hardness, and total dissolved solids (TDS). The monitoring results shall
be reported in the monthly DMRs and summarized with the NPDES permit renewal application.
Sampling periods and the samples collected shall be representative of the surface waters.
Instream monitoring by the permittee is provisionally waived considering the permittee's participation
in the Neuse River Basin Association provided the Association agrees to sample for all the parameters
listed in this condition and at the specified locations and frequencies. Instream monitoring shall be
conducted as stated in this permit should the permittee end its participation in the Association.
A. (22.) FISH TISSUE MONITORING NEAR ASH POND DISCHARGE (Outfall 001)
[NCGS 143-215.3 (a)(2)]
The facility shall conduct fish tissue monitoring annually and submit the results with the NPDES
permit renewal application.The objective of this monitoring is to evaluate potential uptake of pollutants
by fish tissue near the ash pond discharge. The parameters analyzed in fish tissue shall include
arsenic, selenium, and mercury. The monitoring shall be conducted in accordance with the sampling
plan approved by the Division. The plan should be submitted to the Division within 180 days from the
effective date of the permit. Upon approval, the plan becomes an enforceable part of the permit. Copies
of the plan and monitoring results shall be submitted to:
1) Electronic Version Only (PDF and CD)
Division of Water Resources
WQ Permitting Section - NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
2) Electronic Version (PDF and CD) and Hard Copy
Division of Water Resources
WSS - Biological Assessment Branch
1621 Mail Service Center
Raleigh, NC 27699-1621
A. (23.) APPLICABLE STATE LAW(STATE ENFORCEABLE ONLY) [NCGS 143-215.1(b)]
This facility shall meet the requirements of Senate Bill 729 (Coal Ash Management Act). This permit,
may be reopened to include new requirements imposed by Senate Bill 729.
A. (24.) CHEMICAL DISCHARGES [G.S. 143-215, 143-215.1]
Discharge of any product registered under the Federal Insecticide, Fungicide, and Rodenticide Act to
any waste stream which may ultimately be released to lakes, rivers, streams or other waters of the
United States is prohibited unless specifically authorized elsewhere in this permit. Discharge of
chlorine from the use of chlorine gas, sodium hypochlorite, or other similar chlorination compounds
for disinfection in plant potable and service water systems and in sewage treatment is authorized. Use
Page 24 of 29
Permit NC0003417
of restricted use pesticides for lake management purposes by applicators licensed by the N.C. Pesticide
Board is allowed.
A. (25.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS [G.S.
143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
program reports. The final NPDES Electronic Reporting Rule was adopted and became effective on
December 21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (all
The permittee shall report discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month
and submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the
state's eDMR application is compliant with EPA's Cross-Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the
facility being physically located in an area where less than 10 percent of the households have
broadband access, then a temporary waiver from the NPDES electronic reporting requirements
may be granted and discharge monitoring data may be submitted on paper DMR forms (MR 1,
1.1, 2, 3) or alternative forms approved by the Director. Duplicate signed copies shall be
submitted to the mailing address above. See "How to Request a Waiver from Electronic
Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following
the commencement of discharge.
Starting on December 21, 2020, the permittee must electronically report the following
compliance monitoring data and reports, when applicable:
Page 25 of 29
Permit NC0003417
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the
time of each electronic submission. The permittee should use the EPA's website resources to
identify the initial recipient for the electronic submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated
entity for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at: http://www2.epa.gov/compliance/final-nationalpollutant-
discharge-elimination-system-npdes-electronic-reporting-rule.
Electronic submissions must start by the dates listed in the "Reporting Requirements" section
above.
3. How to Request a Waiver from Electronic Reporting
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request
to the Division. Requests for temporary electronic reporting waivers must be submitted in
writing to the Division for written approval at least sixty (60) days prior to the date the facility
would be required under this permit to begin submitting monitoring data and reports. The
duration of a temporary waiver shall not exceed 5 years and shall thereupon expire. At such
time, monitoring data and reports shall be submitted electronically to the Division unless the
permittee re-applies for and is granted a new temporary electronic reporting waiver by the
Division. Approved electronic reporting waivers are not transferrable. Only permittees with an
approved reporting waiver request may submit monitoring data and reports on paper to the
Division for the period that the approved reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found
on the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.1 (b) and Supersedes Section B. (11.) (d11
All eDMRs submitted to the permit issuing authority shall be signed by a person described in
Part II, Section B. (11.)(a) or by a duly authorized representative of that person as described in
Part II, Section B. (11.)(b). A person, and not a position, must be delegated signatory authority
for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Page 26 of 29
Permit NC0003417
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://deq.nc.gov/about/divisions/water-resource s/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall
make the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
•
"I certify, under penalty of law, that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gather and evaluate the information submitted. Based on my inquiry of the person or
persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false information,
including the possibility of fines and imprisonment for knowing violations."
5. Records Retention [Supplements Section D. (6.11
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from
the date of the report. This period may be extended by request of the Director at any time [40
CFR 122.41].
Page 27 of 29
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Receiving Stream:Neuse River Stream Class: WS-IV
State Grid/USGS Quad:F26NE/NW Goldsboro Drainage Basin:Neuse River Basin
001:Latitude 35°22'16" Longitude 78°04'09" HUC: 03050105 X
002:Latitude 35°22'09" Longitude 78°05'06" Sub-Basin: 03-04-12
002A:Latitude 35°22'18" Longitude 78°03'54" ,- I V
003:Latitude 35°22'02" Longitude 78°04'60" Wayne County
004: Latitude 35°22'18" Longitude 78°06'04"
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LEGEND ;� 0MCI
GRAPH�c SCALE
zsoo soo ioao FIGURE 1
]•��ACTIVE ASH BASIN WASTE BOUNDARY
IN FEET WASTE AND COMPLIANCE BOUNDARIES
1 ACTIVE ASH BASIN COMPLIANCE BOUNDARY .
` s I<S RNEP STREET SUR
E 220
t GREENVILLE SOUTHGROLINA29601 H.F.LEE ENERGY COMPLEX
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INACTIVE ASH BASIN WASTE BOUNDARY 7 ........, ..",,.
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r , a• PLANT BOUNDARY F - Xito a ueR
Attachment A Compliance Boundary